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Multiply recorded hologram for security

US 5,319,476 A · Assignee: Dai Nippon Printing Co., Ltd. · Inventors: Yamazaki; Satoshi et al.

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Listed from its USPTO record in Patent Yard's full-term archive. Its claims, description and drawings are in the USPTO PDF and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed January 8, 1993 and granted June 7, 1994. A patent filed before June 8, 1995 lasts 17 years from grant or 20 from filing, whichever is longer, so its term ended January 8, 2013.
  • Any extension is capped at five years, so it can't still be in force.
  • We haven't checked its US family, and a later related patent could still be in force. We check US rights only.
FiledJanuary 8, 1993
GrantedJune 7, 1994
Term endedJanuary 8, 2013
Application number08/002200
Classification (CPC)G06K7/12 +2 more
Length4 pages

Timeline

Timeline From USPTO dates

1994199619982000200220042006200820102012Application filedJan 8, 1993Patent grantedJune 7, 1994Term endedJan 8, 2013

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